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CVE-2007-0773

14
FAUCET Score

CVE-2007-0773 describes a local denial-of-service vulnerability in the Linux kernel, specifically versions prior to 2.6.9-42.0.8 in Red Hat Enterprise Linux 4.4. This flaw, an incomplete fix for CVE-2005-3044, allows authenticated local users on 64-bit x86 systems to trigger a kernel OOPS (null dereference) via a 32-bit ioctl call. The vulnerability has a CVSS score of 4.6, indicating medium severity, with a low attack complexity and requiring local user authentication (AV:L/AC:L/Au:S). Its primary impact is a complete denial of service (A:C). There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting low public attention.

Impacted Technologies

VendorProductVersion(s)CPE
4.4CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.4:*:as:*:*:*:*:*
4.4CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.4:*:es:*:*:*:*:*
4.4CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.4:*:ws:*:*:*:*:*
4.4CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:4.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.6MEDIUM

AV:L/AC:L/Au:S/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
3.1
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 82nd percentile among its peer group of 15,938 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel-0:2.6.9-55.0.2.EL
View patch
redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2007-0773Important

lost fput in a 32-bit ioctl on 64-bit x86 systems

Jun 22, 2007

References

bugzilla.redhat.com / bugzilla/show_bug.cgi
Patch
osvdb.org / 37128
rhn.redhat.com / errata/RHSA-2007-0488.html
Patch
secunia.com / advisories/25838
secunia.com / advisories/26289
secunia.com / advisories/27227
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11267
support.avaya.com / elmodocs2/security/ASA-2007-287.htm
novell.com / linux/security/advisories/2007_53_kernel.html